I don't know what it is with yurts right now, but apparently, they are "in". Two differentcompanies building yurts came across my prefab feeds. Then, a day later, Core77, a design blog, covered a third company producing a prefab yurt product:

"The Mongols once had the largest contiguous empire in history, with their conquests covering 12 million square miles. While little is left of that legacy, their contribution to design remains in the form of yurts....

Modern yurts now exist in the form of The Nomad, an eco-friendly yurt kit designed by Stephanie Smith and sold by Ecoshack. You can put one up yourself in about an hour, and you don't need to conquer anybody to call them home."

The products vary from company to company; so, if you want a prefab yurt, at least you've got options.